Compile/organise several DWG files into one clear drawing

I have several separate CAD files containing plans and elevations for a 3 storey hotel (plus basement and loft) which are lacking in layers and organisation, so need them to be made into one single CAD file with all layers, etc in order, so that I can take them forward to work up a proposed design for an extension.

I'll provide a template. No page layouts are needed, just tidy up the CAD file so I can take it forward.

I estimate this to be about a day's work for someone who is used to doing this kind of thing. That would usually be me but I'm too busy right now!

Elevations and floor plans of the hotel are attached, also a sample drawing of mine to show the kind of organisation required.

Turnaround by next Monday/Tuesday, and UK bidders only please!

Thanks,
Will